Solar activity fluctuated from low to high and then returned
to low levels during the reporting period. The quietest day was June 1, marked
by isolated low‑intensity C‑class flares; the strongest event that day was a
C1.5 flare from active region 14449 in the southwest portion of the solar disk.
Activity increased to moderate levels with frequent C‑class flares and three M‑class
events: M3.3 and M1.3 flares from active region 14455 in the northern
hemisphere, and an M1.2 flare from active region 14461 near the southeast limb.
Activity rose further on June 3, reaching high levels when
active region 14455 produced three major flares - M9.3, M7.7, and the week’s
strongest event, an X1.0 flare. Following this peak, activity declined, with
the strongest events being a C2.6 flare on June 4 and a C4.7 flare on June 5.
Activity briefly returned to moderate levels on June 6 with an M1.8 flare from
active region 14461. By June 7, conditions had settled back to low levels with
only low‑intensity C‑class flares.
Several of the M‑ and X‑class flares were associated with
coronal mass ejections (CMEs) that produced minor to moderate geomagnetic
activity.
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